Marktest is leading in Top 10K Sites and Top 100K Sites.
WebProspector has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Marketing & Advertising, Computer & Electronics and 44 other categories.
Marktest is leading in Soccer and Newspapers.
WebProspector is leading in most countries, including Germany, Austria, France, Netherlands and 15 other countries.
Marktest is leading in Portugal and Brazil.